<mat-toolbar color="primary">
  <a mat-icon-button href="https://www.angular.io/" target="_blank">
    <img src="assets/angular.png">
  </a>
  <h2 fxFlex>Angular Heroes Registry</h2>
  <a mat-button routerLink="new">
    <mat-icon>add</mat-icon>
    New hero
  </a>
  <a mat-button href="https://github.com/PacktPublishing/Learning-Angular-9--Third-Edition/tree/master/ch13" target="_blank">
    <mat-icon>code</mat-icon>
    View source
  </a>
</mat-toolbar>
